Communication error HR Neptune HELP Plz
We have a 2005 Holiday Rambler Neptune, Cummins 300 and Allison 1250MH. On way home from 1000 mile trip our service transmission light came on and stop engine. We pulled over, checked fluids and appeared low so we added proper fluids. Lights went off..took a bit but she started shifting right and we traveled a few hundred miles more. Lights come on again and she goes into limp mode. Pull over and check fluids which appear overfull. Drain a bit and limp to Allison certified tech facility. They checked wire harness and find bare wires in throttle position. They believe that caused issues and replace/fix them. While servicing transmission the addressed a few seals that need fixed and notice we need new batteries (house) so they replace those. They had to reprogram valve body to get her in shifting mode after all this but then ACTIVE CODE pops up..apparently it was inactive and has now become active. It says communication error from engine ECM to Transmission ECM. They have put in tester ECM (didnít fix), check exhaust, batteries, filters, connections and such. Freightliner and Allison help told them to check chassis wire harness and they have checked 8 miles of wires, including chassis wire harness, and found a few bare wires that were addressed. Supposed to get her all put back together on Monday to see if it works..if it doesnítÖ.we are 85 hours of labor into this..please someone help!!